Denture.



L. GREENBAUM.

DENTURE. APPLIOATION F ILED DEC. 21, 1911.

Patented May 28, 1912.

' ATTORNEYS essors.

WLZTEE TATEd PATENT nno ennuunncra, on NEW roan, it. s.

DENTUEE.

ful Improvement in Dentures, of which the follow ng is aspecification.

My invention relates to artificial dentures and particularly to dentures for crown, bridge or plate work, the object of my invention being to provide an improved denture and socket or cup for such dentures andan improved method of making the latter.

In the accompanying drawings, Figure 1 is a detached perspective of a denture With socket parts detached and unassembled; Fig. 2 is a perspective of the parts assembled; Fig. 3 is a perspective of a completed socket with denture detached; Fig. 4 is a perspective ,of portion of a bridge with the sockets niounted thereon; Fig. 5 is a perspective of a modified form of denture; and lgigl 6 is a perspectiveof a modified form of 0 1p.

In thenoanufacture of sockets or cups for securing'artificial dentures to dental bridges,

- plates or: for crown ,work, it has heretofore een customary to make a special die or mold from the base of the denture to be used, and to swage or mold and in some cases even to cast, the socket to correspond therewith. 'These methods are extremely laborious, time consuming and costly. Furthermore the sockets so made are extremely weak when designed for front teeth where a front wall for the socket a side wall is not permissible by reason of its unsightliness. The strain upon the denture is consequently taken substantially in its entirety by the rear wall of the socket and the customary anchor pin which penetrates the denture. Breakage is a very common occurrence as a result of the wealmess and in many cases of this support. My invention greatly simplifies the making of this socket and at the same time provides a socket which in its jointure with the tooth is mechanically far stronger than those of the type described. My improved socket is equally suited for crown, bridge or plate work.

Briefly described my invention consists in providing an artificial tooth or denture such as is commonly employed for crown, bridge or plate work, with an improved socket by fipcciflcatlon of letters Fatent. "s mem filed December 21, 1911.

a certain new and usel5 and 16 in the denture while the stra Patented May 28, Jlilltft. Serial No. 66?,1t2.

preferably cut in the side of the teeth from base to top, as illustrated in Figs. 1 to 3, and secondly, the formation of a socket for this tooth by the use of a clip having legs-which press a sheet of flexible material, such as gold leaf, into these lateral grooves in the tooth, and a base strap connecting the legs of the clip and underlying the base of the tooth whereby the gold leaf is shaped into a socket, which is then made rigid by'solder.

The socket also preferably comprises a central pin upstanding from the base and entering a well in the body of the tooth, preferably out of line with the lateral grooves cut in the sides of the tooth, said central pin serving to more firmly anchor the tooth in its socket. The formation of a socket by the use of this clip is extremely simple.

Referring to Fig; l, the denture 10 is held in the fingers of one hand while a sheet of flexible material, referably gold leaf 11, is pressed upon the a ase of the denture. The clip, which comprises a strap 12 and legs 13, 1 1 extending substantially at right angles therefrom, is then pressed down upon the denture in such manner that the legs 13 and 14: force'the sheet 11 into the lateral grooves 12 resses the same down upon the base 0 the These essentials comprise, firstly I ent-ure. The mere pressure of the clip into position thus molds the gold roughly to the shape of the denture base and it may then be more accurately finished. to conform to the base, if desired, by further working it either with the fingers or with a shaping tool. This shaping may be donebefore the clip is applied,.but it is not as readily effected before as after. The pin 18 is then pressed through the sheet 11 and perforation21 in the strap 12, into the usual well 20 in the denture, and if the socket is to be used for bridge work, the pin is out off substantially flush with the face of the strap 12. Having thus shaped the socket to the base of the denture and the excess gold trimmed away, a little wax may be applied to hold the clip, pin and gold tbgetlier in. shaped position, the denture separated from the thus formed socket and solder flowed upon the latter to unite the parts and give body to the socket. It may then be again fitted to the denture and further finished or trimmed by cutting, filing or otherwise, if necessary.

A finished socket is illustrated in Fig. 3.

securing pin extended to form an anchor for the bridge in a crown root. The crown tooth and dummies are fastened mto their sockets by means of any suitable porcelain cement,

whereupon the bridge is ready for adjustment in the mouth of the patient. son of the fact that the sides of the socket are slightly divergent, it is obvious that upon the accidental fracture of a denture, the latter may be readily removed from its socket Without disturbing its attachment and anew denture cemented in position, Without serious annoyance to the patient.

As details of structure, it maybe pointed out that the lateral grooves- 15, 16 in the denture 10 may extend only part Way up the side of the denture, as Fig. 5, 01' all the way from bottom to top, as in Figs. 1 and 3. These grooves it will be noted, preferably lie out of alinement with the well 20 of the securing pin 18, in order that no line of cleavage may result from the formation of the three recesses 15, 16 and 20' in alinement, while the triangular arrangement illustrated insures the greatest possible amount of porcelain between the recesses and thus the maintenance of the greatest possible strength in the denture. In corre sponding manner the perforation 21 in the clip strap 12, to accommodate the pin 18, is out of line with the two legs 13, 14, so that this perforation 21 may overlie the well 20 when the clip legs 13, 14, are seated in the grooves 15, 16.

As an obvious modification of the clip for bridge or plate work, the pin 18 maybe formed in one therewith, as illustrated in Fig. 6, although this is not as desirable as an independent pin which ordinarily willbe heavier than the arms of theclip.

The precise embodiment of my invention shown and described are but illustrative of my invention.

I claim as my invention 1. In artificial dentures. a denture-with lateral cuts extending to the base of the By reaing as essential elements thereof, a clip fitting over the base of the denture and having upstanding legs engaging said lateral cuts in the denture, a sheet of flexible material pressed intosaid cuts by the legs of said clip and solder unitingsaid clip and flexible material to form a rigid socket.

' 2. In artificialdentures,an attachable tooth with central'well opening to the base of said tooth and having straight grooves cut in the opposite sides of said tooth, in combination witha socket or cup to receive the tooth, said socket comprising a clip hav:

ing upstanding legs adapted to enter the lateral grooves in the tooth and a sheet of flexible material shaped to the tooth base and lateral recesses by said clip, and solder tooth, and a socket for said denture comprisuniting said clip and flexible material into i a substantially rigid cup or socket, together socket and entering the well in said tooth in assembled condition. I

3. In artificial dentures, 'an attachable tooth with recesses in the opposite sides with a central anchor pin fast with said.

thereof and a central well opening into the I base of said tooth, in combination with a socket or cup to receive the tooth, said socket comprising a clip having upstanding legs adapted to enter the-lateral recessesin the tooth and a sheet of flexible material shaped to the tooth base and lateral recesses by said 1 clip together with an independent pin piercing the base of said clip and the flexible material and entering said well in the tooth, and solder uniting said clip pin and flexible material into a substantially rigid cup or socket.

4:. In artificial denturesyadenture With lateral grooves and central Well, a socket therefor comprising as essential elements thereof, a clip having upstanding legs engaging said lateral grooves and 'an anchor pin passing through the base 0 he slip and entering said central well.

5. For use in artificial dentures, a socket clip comprising a strap member adapted to lie in the base of a socket,lateral upstanding legs to engage lateral abutments on the denture and a central anchor pin fast with said clip in}: completed socket and out of alinement with said lateral legs.

In testimony whereof I have signed my name to this specification, in the presence of WVAL'rm: Anne, L. H. G'ROTE. 

